New Horizons at Europa |
New Horizons at Europa |
Guest_AlexBlackwell_* |
Feb 27 2007, 09:31 PM
Post
#1
|
Guests |
Time to start a thread about a far more interesting jovian moon
Passing probe to study 'crop circles' on Europa 17:38 27 February 2007 NewScientist.com news service Kelly Young |
|
|
Mar 4 2007, 03:40 PM
Post
#2
|
|
Merciless Robot Group: Admin Posts: 8785 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Actually, IIRC, the Io torus, Saturn's E-ring, and Titan's hydrogen torus were all discovered from ground-based observations back in the 70s. Io's position along its orbit was found to have an effect on Jupiter's radio emissions, and this was the first hint that something was going on there. The E-ring was found visually, and I think that Titan's hydrogen was also found via radio astronomy, but don't know the details.
The interesting implication here is that planetary satellites in equatorial orbits with 'outgassing' surfaces tend to leave rather obvious signatures/artifacts along their orbits. (I wouldn't expect to see anything in Triton's orbit; Triton itself only stays there out of sheer inertia!) This probably does not bode well for any significant surface activity on Europa. -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
|
|
|
Lo-Fi Version | Time is now: 23rd September 2024 - 08:13 AM |
RULES AND GUIDELINES Please read the Forum Rules and Guidelines before posting. IMAGE COPYRIGHT |
OPINIONS AND MODERATION Opinions expressed on UnmannedSpaceflight.com are those of the individual posters and do not necessarily reflect the opinions of UnmannedSpaceflight.com or The Planetary Society. The all-volunteer UnmannedSpaceflight.com moderation team is wholly independent of The Planetary Society. The Planetary Society has no influence over decisions made by the UnmannedSpaceflight.com moderators. |
SUPPORT THE FORUM Unmannedspaceflight.com is funded by the Planetary Society. Please consider supporting our work and many other projects by donating to the Society or becoming a member. |